<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			button{
				/* width: 20px; */
			}
		</style>
	</head>
	<body>
		<button type="button">你点一下</button>
	</body>
	<script type="text/javascript">
		var button = document.getElementsByTagName('button')[0]
		button.addEventListener('click',function(e){
			e.stopImmediatePropagation()
			e.c
			button.style.backgroundColor = 'skyblue'
		},false)
		button.addEventListener('click',function(e){
			button.innerHTML = 'wuhu'
		},false)
	</script>
</html>
